South Jersey heat does not always knock politely.
Sometimes it kicks the door open, sits on your porch, and stays for a week.
When that happens, your air conditioner has a big job. It has to fight outdoor heat, indoor humidity, hot attics, sunny windows, older ductwork, and the general nonsense of July.
The good news is simple. Not every warm house means your AC is broken.
The bad news is also simple. Some warning signs should not be ignored.
Here is what to do during a South Jersey heatwave, how to help your AC keep up, and when it may be time to call for AC repair.
Why South Jersey Heatwaves Are Hard on Your AC
South Jersey summers can be sticky.
Your AC does not just cool the air. It also removes moisture from the air. That is why a home can feel uncomfortable even when the thermostat looks “close enough.”
During a heatwave, your AC may run longer than normal. That can be expected.
Homes in Hammonton, Mays Landing, and nearby Atlantic County towns can also have extra challenges. Some have older windows. Some have hot second floors. Some have attic ductwork. Some have older insulation. Some have additions that never seem to cool right.
Every house has a personality.
Some are lovely.
Some are dramatic.
Is It Normal for Your AC to Run All Day?
Sometimes, yes.
During extreme heat, your AC may run much longer than usual. It is trying to keep the indoor temperature steady while outdoor heat keeps pushing into the home.
That does not always mean something is wrong.
But your AC should still make progress.
This Can Be Normal
During a heatwave, this may be normal:
- Your AC runs longer than usual
- Your home cools slowly
- The temperature rises a little during the hottest part of the day
- The house catches up later in the evening
- The air still feels mostly dry and comfortable
This Is Not Normal
These signs may point to an AC problem:
- The AC runs all day, but the house keeps getting warmer
- Warm air comes from the vents
- Airflow feels weak
- The house feels sticky or humid
- The system turns on and off repeatedly
- Ice forms on the refrigerant lines
- The outdoor unit is not running
- The breaker keeps tripping
- One floor is much hotter than the rest of the home
At that point, the heatwave may not be the only problem. Your AC may need service.
Do Not Keep Lowering the Thermostat
We understand the temptation.
The house is hot, so you set the thermostat to 65 degrees and hope the AC takes the hint.
Sadly, your AC does not work that way.
Setting the thermostat much lower does not cool the house faster. It usually just makes the system run longer.
A central AC system is not designed to turn your home into a walk-in freezer. Lovely idea. Not realistic.
As a general rule, many AC systems can keep a home about 20 degrees cooler than the outdoor temperature during very hot weather. So, if it is 95 degrees outside, your home may sit around 75 to 78 degrees during the hottest part of the day.
That does not always mean your AC is broken. It may just be fighting heat, humidity, attic heat, older windows, ductwork issues, and the charming South Jersey tradition of summer feeling like soup.
A better approach is to choose a realistic setting and keep it steady. For many homes, that may be around 74 to 78 degrees during a heatwave.
But if your AC is blowing warm air, has weak airflow, runs all day without cooling, or the house keeps getting hotter, there may be a bigger issue.
The thermostat is not a magic wand.
Unfortunate, but true.
Simple Ways to Help Your AC Keep Up
A few small steps can help your home stay cooler. They can also reduce stress on your AC system.
Close Blinds and Curtains
Sunlight adds heat fast.
Close blinds, curtains, and shades during the hottest part of the day. This helps most in rooms with large windows or direct afternoon sun.
Second-floor bedrooms often need the most help.
Because, naturally, heat rises and then acts proud of itself.
Check Your Air Filter
A dirty air filter can block airflow.
When airflow is poor, your AC has to work harder. Your home may cool less evenly. The system may even freeze up.
Check the filter first.
It is simple. It is cheap. It is often the problem.
Not always.
But often enough to be annoying.
Keep Vents and Returns Open
Do not close a bunch of vents to force air into other rooms.
That can cause pressure problems in the system.
Keep supply vents open. Keep return vents clear. Do not block them with furniture, rugs, curtains, or boxes.
Your AC needs air moving through the system.
It is very needy that way.
Avoid Using the Oven During Peak Heat
Try not to use the oven during the hottest part of the day.
The oven adds heat to the house. Then the AC has to remove that heat.
This is not teamwork.
Use the grill, microwave, air fryer, or keep meals simple.
Your AC is already fighting South Jersey humidity. It does not need to fight a tray of baked ziti at 4:30 p.m.
Use Ceiling Fans
Ceiling fans help people feel cooler.
They do not actually lower the room temperature. They move air across your skin, which helps you feel more comfortable.
Use fans in occupied rooms. Turn them off when nobody is in the room.
Also, make sure ceiling fans spin counterclockwise in summer. That pushes air downward.
Keep the Outdoor Unit Clear
Your outdoor AC unit needs airflow.
Keep grass, weeds, leaves, shrubs, and debris away from it. Do not cover it. Do not lean things against it.
Give the unit room to breathe.
It is outside doing its best.
Signs You May Need AC Repair
Some AC issues should be checked by a professional.
Call for AC repair if you notice:
- Warm air from the vents
- Weak airflow
- The AC running nonstop without cooling
- Ice on the refrigerant lines
- Water leaking near the indoor unit
- The outdoor unit not turning on
- Loud buzzing, grinding, or rattling sounds
- Burning smells or electrical odors
- Short cycling
- High indoor humidity
- A sudden jump in your electric bill
- Breakers tripping more than once
These problems can come from several things.
It could be poor airflow. It could be a refrigerant issue. It could be a dirty coil. It could be a weak capacitor, motor problem, drain issue, or electrical issue.
That is why guessing only gets you so far.
And usually it gets you there sweaty.
Why Your AC May Not Be Keeping Up
If your AC is running but your home is still hot, there are a few common reasons.
Dirty Coils
Your AC has coils that help move heat.
If the coils are dirty, the system cannot do its job as well. It may run longer and cool less.
Low Refrigerant
Low refrigerant can cause poor cooling.
It can also cause frozen coils and damage to the system. Low refrigerant usually means there is a leak, so it should be checked.
Poor Airflow
Poor airflow can make the whole house uncomfortable.
Common causes include dirty filters, blocked returns, closed vents, duct problems, or blower issues.
Old or Undersized Equipment
An older AC system may be fine on a normal summer day.
Then a heatwave shows up and exposes everything.
If your system struggles every summer, it may be aging, undersized, or no longer working efficiently.
Ductwork Problems
Leaky or poorly designed ductwork can waste cooled air.
That means your AC may be working hard, but the cool air is not getting where it needs to go.
Very rude, honestly.
When to Think About AC Replacement
AC repair can solve many problems.
But sometimes AC replacement makes more sense.
It may be time to consider AC replacement if:
- Your system is 10 years old or older
- It needs frequent repairs
- Repair costs are getting high
- It struggles every summer
- Your home feels humid
- Some rooms never cool well
- Your energy bills keep rising
- The system uses outdated refrigerant
- The compressor has failed or is close to failing
A new system may improve comfort, humidity control, energy use, and noise levels.
Depending on your home, you may want to consider a central AC system, heat pump, or ductless mini-split.
Laury Heating Cooling & Plumbing provides free estimates on full AC system replacements.
Heat Safety Matters Too
A heatwave is not only an AC issue.
It can become a health issue.
Check on older adults, young children, neighbors who live alone, people with medical conditions, and pets.
Watch for signs of heat exhaustion, such as dizziness, heavy sweating, weakness, nausea, headache, cramps, or fainting.
If someone seems confused, loses consciousness, or appears seriously overheated, call emergency services right away.
If your home is unsafe during extreme heat, look for a local cooling center or contact NJ 211 for help finding cooling resources.
Air conditioning is important.
People are more important.
Even when they keep touching the thermostat.
Read these ASPCA tips for caring for pets during heatwaves.
Should You Schedule AC Maintenance Before the Next Heatwave?
Yes.
AC maintenance cannot make an old system brand new.
That would be lovely. It would also be magic.
But regular maintenance can help catch problems before they turn into breakdowns.
An AC tune-up can help find dirty coils, weak capacitors, poor airflow, clogged drain lines, worn electrical parts, thermostat issues, refrigerant concerns, blower motor problems, and early signs of system failure.
Maintenance can also help your system run more efficiently.
It may also help protect your manufacturer warranty, since many manufacturers require regular maintenance to keep warranty coverage valid.
Need AC Help During a South Jersey Heatwave?
When your AC is not keeping up, Laury Heating Cooling & Plumbing can help.
We have served South Jersey homeowners since 1945. Our team works on central air conditioners, heat pumps, ductless systems, older systems, newer high-efficiency systems, and plenty of equipment with “character.”
Sometimes too much character.
Whether you need AC repair, AC maintenance, or a free estimate for AC replacement, we can help you find the right next step.
Schedule AC service with Laury Heating Cooling & Plumbing today.
